﻿using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;

namespace PostFormFile
{
    class Program
    {


        /// <summary>
        /// 跟PHP同样的MD5加密方法
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        private static string Md5(string str)
        {
            byte[] b = Encoding.UTF8.GetBytes(str);
            b = new MD5CryptoServiceProvider().ComputeHash(b);
            string ret = string.Empty;
            for (int i = 0; i < b.Length; i++)
            {
                ret += b[i].ToString("x").PadLeft(2, '0');
            }
            return ret;
        }

        /// <summary>  
        /// 将c# DateTime时间格式转换为Unix时间戳格式  
        /// </summary>  
        /// <param name="time">时间</param>  
        /// <returns>long</returns>  
        private static long ConvertDateTimeToInt(System.DateTime time)
        {
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1, 0, 0, 0, 0));
            long t = (time.Ticks - startTime.Ticks) / 10000;   //除10000调整为13位      
            return t;
        }

        /// <summary>
        /// 获得13位的时间戳
        /// </summary>
        /// <returns></returns>
        public static string GetTimeStamp()
        {
            System.DateTime time = System.DateTime.Now;
            long ts = ConvertDateTimeToInt(time);
            return ts.ToString();
        }

        /// <summary>
        /// 获取签名
        /// </summary>
        /// <param name="d"></param>
        /// <returns></returns>
        public static string GetSign(Dictionary<string, string> d)
        {
            string appSecret = "157ebe5514dc461690847a7643e98b65";
            string[] strArr = d.Keys.ToArray();
            StringBuilder sb = new StringBuilder();
            sb.Append(appSecret);
            foreach (var item in strArr)
            {
                sb.Append(item).Append(d[item]);
            }
            sb.Append(appSecret);
            string signSource = sb.ToString();
            string sign = Md5(signSource).ToUpper();
            return sign;
        }

        static void Main(string[] args)
        {
            try
            {
                //3.调用模拟post表单

                //string appId = "fct7mofxfo";
                string channelId = "365800";
                string rank = "1";

                var url = "https://localhost:44384/api/Live/UpdateAuthWhiteList";
                var xls1 = @"D:\Files\excel\20190816\661a2126-b601-435f-a217-6452be487015.xls";
                //var log2 = @"D:\temp\log2.txt";
                List<FormItemModel> lfm = new List<FormItemModel>();

                lfm.Add(new FormItemModel() { Key = "channelId", Value = channelId });

                lfm.Add(new FormItemModel() { Key = "rank", Value = rank });
                lfm.Add(new FormItemModel() { Key = "file", Value = "", FileName = "WhiteListTemplate.xls", FileContent = File.OpenRead(xls1) });


                //提交表单
                var result = PostForm(url, lfm);
                Debug.Write(result);
                Console.WriteLine(result);
            }
            catch (Exception ex)
            {
                Console.WriteLine("err" + ex.Message + "|errStackTrace:" + ex.StackTrace);
            }

            Console.WriteLine("End..");
            Console.ReadKey();
        }


        private string uploadViewList(string videoId)
        {

            string videoJsonStr = "";

            try
            {
                string jsonUrl = "http://api.polyv.net/live/v3/channel/auth/upload-white-list";
                //POST提交数据
                HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(jsonUrl);
                myRequest.UserAgent = "polyv_vod_pc_dotnet_sdk";
                myRequest.Timeout = 10000;
                myRequest.Proxy = null;
                //读返回内容
                HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
                StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
                videoJsonStr = reader.ReadToEnd();
                
                //MessageBox.Show(retStr);
                reader.Close();
                myRequest.Abort();
                myResponse.Close();

                if (videoJsonStr.Equals(""))
                {
                    string errMsg = videoId + "  get videojson error: null";
                    //mylog.Error(errMsg);
                    //uploadLog(videoId, -4, errMsg + "==>" + jsonUrl);
                    //continue;
                }
            }
            catch (Exception ex)
            {
            }
            return videoJsonStr;
        }


        //2.提交表单主逻辑实现
        /// <summary>
        /// 使用Post方法获取字符串结果
        /// </summary>
        /// <param name="url"></param>
        /// <param name="formItems">Post表单内容</param>
        /// <param name="cookieContainer"></param>
        /// <param name="timeOut">默认20秒</param>
        /// <param name="encoding">响应内容的编码类型（默认utf-8）</param>
        /// <returns></returns>
        public static string PostForm(string url, List<FormItemModel> formItems)
        {
            //, int timeOut = 20000
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
            request.Method = "POST";
            //request.Timeout = timeOut;
            //request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
            request.UserAgent = "polyv_vod_pc_dotnet_sdk";
            request.Timeout = 10000;
            request.Proxy = null;

            string boundary = "----" + DateTime.Now.Ticks.ToString("x");//分隔符
            request.ContentType = string.Format("multipart/form-data; boundary={0}", boundary);
            //请求流
            var postStream = new MemoryStream();
            #region 处理Form表单请求内容
            //是否用Form上传文件
            var formUploadFile = formItems != null && formItems.Count > 0;
            if (formUploadFile)
            {
                //文件数据模板
                string fileFormdataTemplate =
                    "\r\n--" + boundary +
                    "\r\nContent-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"" +
                    "\r\nContent-Type: application/octet-stream" +
                    "\r\n\r\n";
                //文本数据模板
                string dataFormdataTemplate =
                    "\r\n--" + boundary +
                    "\r\nContent-Disposition: form-data; name=\"{0}\"" +
                    "\r\n\r\n{1}";
                foreach (var item in formItems)
                {
                    string formdata = null;
                    if (item.IsFile)
                    {
                        //上传文件
                        formdata = string.Format(
                            fileFormdataTemplate,
                            item.Key, //表单键
                            item.FileName);
                    }
                    else
                    {
                        //上传文本
                        formdata = string.Format(
                            dataFormdataTemplate,
                            item.Key,
                            item.Value);
                    }

                    //统一处理
                    byte[] formdataBytes = null;
                    //第一行不需要换行
                    if (postStream.Length == 0)
                        formdataBytes = Encoding.UTF8.GetBytes(formdata.Substring(2, formdata.Length - 2));
                    else
                        formdataBytes = Encoding.UTF8.GetBytes(formdata);
                    postStream.Write(formdataBytes, 0, formdataBytes.Length);

                    //写入文件内容
                    if (item.FileContent != null && item.FileContent.Length > 0)
                    {
                        using (var stream = item.FileContent)
                        {
                            byte[] buffer = new byte[1024];
                            int bytesRead = 0;
                            while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) != 0)
                            {
                                postStream.Write(buffer, 0, bytesRead);
                            }
                        }
                    }
                }
                //结尾
                var footer = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
                postStream.Write(footer, 0, footer.Length);

            }
            else
            {
                request.ContentType = "application/x-www-form-urlencoded";
            }
            #endregion

            request.ContentLength = postStream.Length;

            #region 输入二进制流
            if (postStream != null)
            {
                postStream.Position = 0;
                //直接写入流
                Stream requestStream = request.GetRequestStream();

                byte[] buffer = new byte[1024];
                int bytesRead = 0;
                while ((bytesRead = postStream.Read(buffer, 0, buffer.Length)) != 0)
                {
                    requestStream.Write(buffer, 0, bytesRead);
                }

                ////debug
                //postStream.Seek(0, SeekOrigin.Begin);
                //StreamReader sr = new StreamReader(postStream);
                //var postStr = sr.ReadToEnd();
                postStream.Close();//关闭文件访问
            }
            #endregion

            WebResponse response = (HttpWebResponse)request.GetResponse();

            using (Stream responseStream = response.GetResponseStream())
            {
                using (StreamReader myStreamReader = new StreamReader(responseStream,Encoding.UTF8))
                {
                    string retString = myStreamReader.ReadToEnd();
                    return retString;
                }
            }
        }
    }
    
    /// <summary>
    /// 表单数据项
    /// </summary>
    public class FormItemModel
    {
        /// <summary>
        /// 表单键，request["key"]
        /// </summary>
        public string Key { set; get; }
        /// <summary>
        /// 表单值,上传文件时忽略，request["key"].value
        /// </summary>
        public string Value { set; get; }
        /// <summary>
        /// 是否是文件
        /// </summary>
        public bool IsFile
        {
            get
            {
                if (FileContent == null || FileContent.Length == 0)
                    return false;

                if (FileContent != null && FileContent.Length > 0 && string.IsNullOrWhiteSpace(FileName))
                    throw new Exception("上传文件时 FileName 属性值不能为空");
                return true;
            }
        }
        /// <summary>
        /// 上传的文件名
        /// </summary>
        public string FileName { set; get; }
        /// <summary>
        /// 上传的文件内容
        /// </summary>
        public Stream FileContent { set; get; }
    }



}
